Machine for grinding valve-cage seats.



F. W. 000KB. MACHINE FOR GRINDING VALVE GAGE SEATS.

I APPLICATION FILED JUNE 17,1907v 950,565. 7 Patented Mar. 1, 1910.

3 S EBTS-SHEET 1.

v P. W. 000KB. MACHINE FOR GRINDING VALVE CAGE SEATS.

, I YAPPLI'GATION FILED JUNE 17,1907. 950,565, Patented Mar. 1, 1910.

3SHEETSSHEET 2.

illnesses,

F. W, OO0KB.- MACHINE FOR GRINDING VALVE GAGE SEATS.

I APPLICATION FILED JUNE 17,1907. v 950,565 Patented Mar. 1, 1910.

3 SHEETS-SHEBT 3.

milzesgs. A [120392210]? WWW/ZZZ I the above objects. may be attained is shown .in the accompanying drawings in Whichconnected arts, and lookin in the op osite ing a bearing for the upper part of the class in the use of which a seat may be ac-.

wention with parts broken away. to'show .meral 8 denotes a base that may be supporting in the spindle support 11.

parts, a tool spindle and a sectional main spindle,

mounted in the bushing 13 on the support 11 and its lower end is provided with any suit- The tool spindle has a central OPGIllIlgBX- "nurrnn s rains PATENT onmcn;

FRANK W. COOKIE, OF HARTFOR'D, CONNECTICUT, ASSIGNOR TO THE POPE senses.

Specification of Letters Patent.

GONNEC'IlICUT, A CORPORATION OF (LOll MACHINE FOR GRINDING -VALVE-CAGE SEATS.

Patented Mar. 1, 1910.

Application filed June 17, 1907. Serial No. 379,486.

To all whom it may concern: 1 Be it known that I, FRANK W. Coons, of i Hartford, in the county of Hartford and i tate of Connecticut, haveinvented a new i and Improved Machine for Grinding Valvei Cage Seats and the Like, offwhich the following is a specification.

My invention relates to the class of machines used for forming the seat of the valve cage, valve,,or the like, and the object of my invention is to provide a machine of this l curately'formed. Y

A further object of the invent-ion is to provide a machine by the use of Which'the operation of forming a seat may be quickly accomplished.

A further object of the invention is to provide a-machine of this class extremely simple in construction and operation.

A formof machine in the use of which Y Figure 1 is-a view in side elevation of a portion of the machme embodying my in-.

construction. Fig. 2 is a top or plan view of the machine. Fig. 3 is a view in horizontal section on a plane passing through the driving shaft, looking rearward. Fig. 1 is a detail View showing the rocker-arm and direction rom the point view of 1g. 1, and with parts beyond the pulley omitted. In the accompanying drawings the nued bya bed or table not shown.- A neck 9 ris s from the base on the upper end of which is located a head 10. A. spindle sup port 11 projects from the base and the head has a cylindrical enlargement 12 formspindle. A bushing 13 is located in an open- The spindle entire includes a number of The tool spindle let is partially able .means of attachment for the grinding deviqes or holder for parts to be ground.

tending into its upper'end 1n which opening the'lower section 15 of the mam spindle is lip 30.

located. A slot-16 is'formed through the may be a lock nut, located underneath thesleeve 22, these nuts holding the spindle "14 and hand sleeve 22in relative. position and allowing rotation of the spindle 14 pendently of the hand sleeve 22.

The upper end of the lower spindle section 15 has an enlargement 23 which may also enter the recess 21 when the tool spindle.

14 is in its raised position. The upper section 24.- of the main spindle .is rigidly con nected to the lower section 15, in the'form shown a tapered end 25 on the one partontering a tapered socket in the enlargement 23. bearing for the section 24 of the spindle in the enlargement or spindle bearing 12 on the head of the machine frame. Nuts 27 and anti-friction washers 28 located underneath.

he bearing 12, and like washers 29 together with a pinion 37 located at the upper end thereof form means'for'limiting the lengthwise movement of the spindle, while permit ting free rota'ry movement thereof.

A lip 30 isformed on the upper edge of the hand sleevc22 and a latch 31 engages the under side of this lip to hold the hand sleeve 22 and the tool spindle 14 at the upper limit of their play. This latch is mounted on a latch base 32 secured to-the neck 9'and a spring 33 maybe employed for holding the in position to engage the latch normall Plates 34 are secured to the upper edge of, the head 10, these plates forming in part a guide-Way for aslide 35, the head 10 being pro erly formed to constitute the remainder of t e guide-Way. The slide 35 bears a rack 36 which meshesvwith a pinion 37 secured to or formingan integral part of the upgler end of the section 24. of the main spin The slide 35 has a projection 38 integrally formed therewith in which is mounted one end of a pin 39, the opposite end of the in being mounted in the main part of the slide.

inde- A bushing 26 forms the immediate 48. An eccentric 57 is secured to and .in order able that the relative A driving rod 40 is pivoted upon the pin 39, the opposite end of this rod being piv- 'otally connected to a clamp 41 located in a T-shaped slot 42 in a crank 43 secured to the main shaft 44 of the machine.

able source of power, as by means of a belt 50.

The shaft 44 bears a pinion'51 in mesh with a gear 52 mounted upon the hub of a pinion 54 which in turn is mounted upon a stud 53 secured to the branch 48 of the fork. The pinion 54 meshes with a gear mounted upon a stud 56, also secured to the braneh the gear 55, as by means of a pin 58, and the strap 59 of the eccentric is secured to an actuating rod 60, the end of this rod opposite the eccentric strap being pivoted to a stud til sccured to the head l0, in the form shown a boss 62 projecting from the head atl'ording the means for supporting the stud.

From the above description it will be seen that as the main shaft 4t is driven, as by means of power applied to the pulley 4t) keyed thereto, the slide 35 will be reciprocated through the medium of the driving rod 40 and crank 43. This, through the intermeshing of the rack on theslide and the pinion 37 at? the end of the spindle bearing the grinding devices, will cause the latter to be reciprocatcd in a circular path. The valve cage, valve, or like part to be titted to the seat being formed is secured at the end of the spindle and a proper ahrading material applied between the meeting surfaces, and by thus reciprm'ating said valve cage, valve or the like a ground joint with the seat is obtained.

In o'rder to form a perfect seat it. is desirlocation of the valve cage, valve, or like. device pulley 49 is secured to the main performing the l g l l l t grinding operation, and the scat being operl ated upon, shall be continuously changed to accomplish'this the rocking arm 46 is rcciprocated through the medium of the pinion 51, gear 52, pinion 54, gear 55,eccentric 57 and actuatingrod '60. The pivot 61 being tixed,'.as the eccentric is rotated by means of the intermeshing gears above described the rocking arm lti is swung upon its pivotal support and it is evident that the reciprocating path of the grinding device is thus constantly changed, that is, the zone of reciprocating movement of any point upon the surface of the grinding dc v ce being constantly varied and changed so that without interrupting the grinding I the Zone of movement of point on the surface operation or changing the relative positions of the grinding device and the device being ground different parts ofsaid, two devices are being constantly brought into contact.

Other means for causing a rotary reciproeating movement to be device, and also for changing thepath of this rotary reciprocating movement are con-' as within the scope and III- dd not limit my I claim;- 1. A machine frame, a tool spindle mounted in the frame, means for uninterruptedly in'lpart'ingreciprocating rotary n'iovement to the spindle, and means for constantly changing the zone of movement of a point on the surface of the spindle.

2. A machine frame, a tool spindle mounted in theframe, a main shaft, connections between said shaft and spindle for uninterruptedly imparting a reciprocating rotary movement to said spindle, and connections with said spindle for constantlychanging the zone of'movement of a point on the surface of the spindle. I

3. A machine frame, a tool spindle mounted in the frame, self-actuated means for unintcrruptedly imparting a reci'p 'ccating rotary movement to said spindle,-and sett actuattul means for constantly changing a point on the surface of the spindle.

4. machine frame, a tool spindle mounted in the frame, means for nnchaniw ally rcrv-iprocating said tool spindle in a circular path, iueansfor mechanically changing the zone of movement of a point on the surface of the spindle, and means for applying pressure to said spindle.

:3. A machine frame. a tool spindle fran'ie. a pinion operatively connected with the spindle, a rack meshing with said pinion, means for nu-K'hanically reciprocating the rack, and mechanical means for constantly changing the zone of movement of a of said rack.

t. A machine frame, a toolspindle mounted in the frame, a main shaft, operative connections between said spindle for 'in'iparting reciprocating rotary movement to the latter. and means for constantly changing the relative location of said main shaft and spindle.

if. A machine frame, a tool spindle mounted in the frame, a slide operatively congiven to the grinding shaft and nected with the spindle to impart r ciprocal ing rotary movement thereto, a 'main shaft operatively connected with the slide, and means for constantly changing the relative location of the shaft and spindle.

9. A machine frame, a tool spindle mounted in the frame, a rocking arm mounted independently of said spindle, spindle actuating means operatively mounted upon said arm( and operatively connected ith the spindle, and means for rocking the arm.

10. A machine frame, a tool spindle mounted in the frame, a rocking arm, spin- I dle actuating means ope atively mounted upon said arm and operatirely connected with the spindle to impart rotary reciprocatinginovement thereto, and means fox rocking said arm.

11. A machine frame, a tool spindle mounted in the frame, a slide operatirely connected with the spindle, a rocking arm, actuating means on said arm opcratirely connected with the slide, and means for rocking the arm.

12. A. machine frame, a spindle mounted in the frame, a rocking arm, a inain'shat't arm.

14:. A machine frame,-a tool spindle, a rocking arm, actuating mechanism on said arm operatively connected with-said spindle, an actuating rod having one end supported Lon a fixed piyot. and the other end connected with the rotary parts on said arm whereby the latter is rocked on its pivot.

15. A machine fra1ne,,'a tool spindle mounted in the frame, a rocking arm, actuating mechanism on said arm operatively connected with said spindle, and including an eccentric, an operating rod having one end supported on a fixed pivot andthe other end connected with said eccentric whereby the arm is rocked on its pivot.

16. A machine frame, a tool spindle mounted inthe frame, a rocking, arm, actuating mechanism on said arm, connections between said mechanism and tool spindle for reciprocating the latter in a circular path,

an actuating rod with one end supported on 'a fixed pivot and the otherconnected with said arm, and connections between the end of said arm and the actuating mechanism for rocking sa d arm.

17. A machine frame, a tool spindle .mounted in the frame, a slide 0 eratively connectediw'iththe spindle, :1 rec ting arm,

a nain shaft mounted on said arm, connec-- t l l l l l l t l i l l 1 l l i J for operating the ti e tions between said main shaft and reciprocating the latter, an eccentric oper' atively connected with the main shaft, and 7 18.1"; machine frame, a tool spindle 'mounted in the frame, a slide op ratively connected with said spindle, a rocking arm, a shaft bearing a cranlt mounted on said arm, connections between said crank and slide for reciprocating the latter, an eccentric, connections between said eccentric and main shaft, and air actuating rod connected with said eccentric and with its end supported on a fixed pivot.

19. A machine frame, a tool spindle mounted in the frame, a slide operatively connected with the spindle, a rocking arin bearing actuating mechanism including a crank operativel connected with said slide and an eccentric ope 'atively connected with an actuating rod, and the actuating rod with one end supported on a fixed pivot.

A machine frame, a-- tool spindle mounted in the frame, a. rocking arm, actuating mechanism mounted on said arm for reciprocating said spindle in a circular path, comiections between said spindle and actuating mechanism, and an actuating rod with one end supported on a fixed pivot, and connections between said rod and actuating mechanism for reciprocating the arm at a comparatively slow rate of speed.

21. A machine frame, a tool spindle mounted in the frame, a rocking arm, totating mechanism on the arm for reciprocating the spindle in a circular path, ro

tating mechanism for rocking said arm and traveling at a dilt'erent rate' of speed from that for operating the spindle, and connections with the rotating mechanism for rocking said arm.

22. A machine frame, a tool spindle mounted in the frame a rocking arm, rotating mechanism on the arm for reciproeating the spindle in a circular path, ro-

tating mechanism for rocking said arm and at alower rate of speed than that spindle, and connections mechanism tor rocking traveling with the rotating said arm.

A machine frame, a toolv mounted in the frame, arocking arm, operating mechanism mounted on said arm and including a rotary member for operating the rocking arm and traveling at a rate of speed different from that of the member for operating the spindle, and connections with the rotary member for operating the rocking arm for causin reciprocation thereof.

24. A tool spindle and a main spindle connected to rotate together but having longitudinal movement one of the other, means for mechanically operspindle independently connected to rotate together but having lonating said spindle, and means for simul taneously manually operating the spindle.

25. A tool spindle and a main spindle gitudinal movement one*h dependently of the other, means for mechanically rotat ng said spindle, and a hand sleeve mountedhn the spindle to allow independent rotation thereof.

26. A machine frame, a tool spindle mount- 27. A machine frame, a tool spindle monnt- I ed in the frame, means for imparting rotating reciprocating movement to the spindle,

and means for constantly changing the commencement point of said reciprocmings I t t j parting bodily movement to the mam shaft,

movement.

28. A machine frame, a tool spindle mounted in the frame, means for unintcrraptedly imparting rotary reciprocating movement to the spindle, and means for changing the point of saidreciprocatory commencement path.

t 29. A machine frame, a tool spindle mounted in the frame, a mainshal't, connections between said shaft and spindle for uninterrnptedly imparting a rotary reciprocating movement. to the spindle, and connections with said shaft for changing the C()H'Htl(llt'- ment point of said reciprocatory path.

30. A machine frame, a tool spindle .lth'hltll ed for continuous reciprocating rotary movement n'it'lie frame, a slide opcratively con.-

nectcd. with the spindle, means for reciprocating the slide, and self-actuated means for changing the path of said rcciprocatory movement.

31. A machine frame, a tool spindle mount;- ed in the frame, means for imparting rotary v t l reciprocating movementto the spindle successively in paths of the same length, and means for changing the commencement point of said reciprocatory path.

32. A machine frame, a tool spindle mounted in the frame, means for.uninterruptedly ,nnparting reciprocating movement to the sp ndle 1n a rotary path, and means for conmg the point of beginning of said rotary movement. 84. A machine frame, a tool spindle mount:-

'ed in the frame, a main shaft mounted to more bodily upon the frantic, means for imand connections between said main shaft and spindle whereby the latter is reciprocated in rotary paths varying in location.

A machine frame, a tool spindle'mounted in the frame, a rocking arm, actuating mechanism mounted on said arm, connections between said actuating mechanism and spindle for imparting rotary reciprocating movement to the spindle, and connections with said mechanism for rocking said arm.

36. A tool spindle and a main spindle connected to rotate together but having longi tndinal movement one independently of the other, means for mechanically operating said spindle, and non-rotatable means mounted on the spindle for manually imparting lon-' gitudinal movement thereto.

FRANK W. COOKE.

Witnesses NED LAWRENCE, H. C. SEYMOUR. 

